Proper assessment of finger length requires a measurement of the length of the third finger - which is measured as the distance between the tip of the third finger and the proximal finger crease seperating the third finger from the palm (see picture).
Since many people do not get enough of this essential mineral in their diet, they may need to get it by taking a magnesium supplement. However, since there are many different types of magnesium supplements, many people do not know which type of magnesium supplement they should take. The different types of magnesium supplements include magnesium sulfate, magnesium citrate, magnesium hydroxide, magnesium oxide, magnesium gluconate, and magnesium lactate.
Dietary supplements. Supplements contain several forms of zinc, including zinc gluconate, zinc sulfate, and zinc acetate. The percentage of elemental zinc varies by form. For example, approximately 23% of zinc sulfate consists of elemental zinc; thus, 220 mg of zinc sulfate contains 50 mg of elemental zinc. The elemental zinc content appears in the Supplement Facts panel on the supplement container. Research has not determined whether differences exist among forms of zinc in absorption, bioavailability, or tolerability.